Electrons drift mobility in amorphous anthrone layers

Abstract

There were investigated the magnitude of the mobility and the type of the mechanism of the electron transport in the amorphous anthrone layers Anthrone (C14H10O) is the molecular crystal. The anthrone molecules due to theirs asymmetry posses permanent dipole moment, = 1.22·10-29Cm. The anthrone samples were obtained by evaporation in vacuum under the pressure of the order of 10-5 Torr on glass plates with lower substrate temperatures. Structural examination of the obtained anthrone layers was made using X – ray diffraction. In order to attain that one employed an automatic diffractometer DAR. Drift electron mobility for obtained amorphous layers were determined with TOF method. Obtained results shows the almost lack of the mobility dependence due to the magnitude of the disorder, although the other results should be expected. Either obtained mobility value , less then 10-2 cm2/Vs and activation energy value on the kT level do not permit state unambiguously if we are here with hopping transport mechanism, or with the band transport with participation of the trapping states.